UNF Zinc Plated Steel Countersunk Socket Allen Key Head Machine Screws 3/16" 1/4

Thread - UNF (AF) (Imperial fine). Grade - 5 (8.8) High Tensile Steel. 1/4" 5/8" 0.48" 0.18" 5/32" 28. 3/8" 1-1/2" 0.72" 0.27" 7/32" 24. TECHNICAL INFORMATION.

eBay